Fireproof gravity-sash.



No. 893.054. l PATENTBD MAR.24, 1908.

y. P. P. SMITH. V i FIREPROOF GRAVITY sAsH.

` APPLICATION FILED MAY 23, 1907.

WMM/wow f .5m/ue Wto@ PIATBNTDMAR. 24. 190s.

P. P'. SMITH. PIREPRooP GRAVITY SAsH.

APPLICATION FILED KAHYKZS, 1907.

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fiam- I Fglm- N0."883,054. 4 ,y PATENTED MAR.24,1908.

A LP., SMITH.

PIREPROOP GRAVITYSASH.

APPLICATION FILED MAY 23, 1907.

No. 888,054. PATENTED MAR. 24, 1908. P. F. SMITH.

'FIREPROUF GRAVITY SASH.

APYLIOATION rum my za, 1907. 4

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The lower locking means comprises a metal base or surface 38 provided with suitably shaped ridges, said base or surface being` secured to the frame 20. Directly above this sur-face and sedured to the sash, is a sultable box or casing 39 (Figs. 12, 13) open aty the bottom and containing a weighted ada ted to drop through its bottom.

pawl or catch 40 hinged to the box and 'Ihis catc 40 is vprovided with a locking edge adapted to engage with the ridges 38. A chain or cord 41 is attached by means of a fusible connection vat the outer side of the catch 40 passing through said pawl or catch and through the inner sash bar 42 and about a pulley Wheel 43. The outer end Vof this chain is provided with means such as the rings 44l adapted to engage with a hook 45 secured to the frame 20. y f

Bothof the above v,described locking means may be readily affixed to Windows already set inplace and are inaccessible from the outside when the window is closed. A fusible connection is thus rovided both on the inside and outside o sash .and on the underside; or as shown in the modification Fig. 10a, simply on the inside and on the under side. In either case, when the sash is open, a fusible connection is presented both on the inside and the outside of the frame as re y quired by the fire underwriters.

retained in the holes 48 and 49. f as used in the modification, the upper pulley not being necessary, is omitted. 1 j To open the window and simultaneously unlock both the top latch and the bottom catch, it is necessary only to pull outwardly the chain 41. This raises the catch 40 and also raws down the inner arm of the lever 31 unlocking the same. The window sash .is shown inppened position in dotted lines (Fig.

' 2), the rings 44 being held by the hook 45.

Should suflicient heat strike lthe sash at the inside when in opened position, the two vparts 46 and 47 of the fusible link would part owing to the melting of the fusible .compound y and thus release the chain and locks. Should suflicient heat strike the outer side or the bottom of the-sash the fusible connection 37 orv the fusible connection at the catch 40 will part,.and thereby release the chains as before. The window thus automatically closes; and the ylevers 31 and v40 being free lock the sash 21fto the frame 20.'

In the foregoing, the various devices have been shown las applied onlyto a window sash, Y

esami@ but it is evident that they may be applied for other similar ur oses, such as in connection with a sky lig t, c oor or the like. A. window or the like thus provided will, if open, almost instantaneously and automatically close and lock upon being exposed either-upon the inside or outside of the frame toiire or to heat from any source. The window sash, and both locks (one at the top and one at the bottom to conform with the underwriters requirements) are gravity acting and therefore positive. No s rings are employed, and the Window normal y opens only to a predetermined extent.

I claim:

1. In a fire proof window: a pivoted gravity sash; `a pivoted gravity latch at the top ofsaid sash a stop secured to the frame of said window and engaged by said latch to lock said window at the top of said sash 5 a gravity catch at the bottom ofsaid sash; a series of ridges upon saidframe adapted to be engaged by said catch to lock the sash at thebottom; a fusible link provided'with a pulley wheel at each end; a chain in connection with said latch, passing about the upper pulley wheel of said fusible link, and secured to said sash; and a second chain in connection with said catch and passing about the lower pulley wheel of said fusible link and provided with means whereby it may be secured to the frame 2. In a fireproof window: a pivoted gravity sash a pivoted lever or latch at the top of said sash, its outer arm being provided with a suitable weight; a stop secured. to the frame of said window, and adapted to be engaged' by the inner arm of said lever or latch to lock the said window sash at the top; a hinged gravity catch at the bottom mounted upon the `frame and adapted to be engaged by said catch to lock the window sash at the bottom; a fusible link rovided with a pulley wheel at each end; a c iainconnected to the inner arm of said pivoted lever or latch, passing freely about said lupper pulley Wheel, and freely through the upper portion vof said sash; fusible means to secure said chain at the outer side of said sash; a second chain passing freely through the said catch andsecured thereto by fusible means, and passing also freely through the lower ortion of said sash, and thence through the inner sash bar and about the lower pulley wheel -of said fusible link; and means torse-l cure said second chain to said frame.

of said sash, a series of ridges upon apiece l 3. In a fire proof Window: a pivoted.

ridges upon a outer side of said sash;

motion of said inner arm; a hinged gravity catch at the bottom of said sash; a series oi piece mounted upon the frame and adapted to be engaged by said catch to lock the window sash at the bottom a fusible link provided With a pulley Wheel at each end; a chain connected to the inner arm of said pivoted lever or latch, passing freely about said upper pulley wheel, and freely through the upper portion of said sash fusible means to secure said chain at the and a second chain through the said catch and by fusible means, and passpassing freely secured thereto ing also freely through the lower portion of said sash,`and thence through the sash bar and about the'lower pulley. wheel of-said fusible link; means to secure said second chain to said frame; an adjustable latch pivotally connected to said sash, passing through a portion of the frame of said Window, and a stop secured to the frame and adapted to engage with said latch to prevent the window from being opened beyond a preg` determined extent.

4. lfn combination with a iire-proof Window; a bracket adapted to be secured to and to t overa Wall of the sash of said Window; a gravity lock, com rising: a secured to the sai( being provided with arm with a weight and a stop secured to the lever pivotallyl bracket, its inner armi4 a latch and the outer frame of said window and adapted to engage the latch of said lever to lock said window.

5; In combination with a fire-proof yvindow: a bracket adapted to be secured to and to fit over 'a wall of the sash of said window; a gravity lock, com rising: a lever pivotally secured to the sai bracket, its inner arm being provided With a latch and the outer arm wlth a Weight; and an adjustable stop secured to the frame vof said vWindow and adapted to engage the latch of said lever to lock said window. i 6. In combination with a fire-proof window: a bracket adapted to be secured to and 'to i't over a Wall of the sash of said Window; a gravity lock, com rising: a lever pivotally secured to the saidJ bracket, its inner arm being provided with a latch and its outer arm with a Weight means to limit the extent of downward motion of the inner arm of said lever; a piece secured to thefralne of said Window; and a stop adjustable With respect to said iece and adapted to engage the latch of said ever to lock said Window.

Signed at Newark in the county of Essex and State of New Jersey this21st day of `May A. D. 1907.

. FRANK F. SMITH.' 

